[PATCH 4.19 074/109] mm/slub.c: include swab.h

[Sasha Levin]

From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

commit 1b3865d016815cbd69a1879ca1c8a8901fda1072 upstream.

Fixes build with CONFIG_SLAB_FREELIST_HARDENED=y.

Hopefully.  But it's the right thing to do anwyay.

Fixes: 1ad53d9fa3f61 ("slub: improve bit diffusion for freelist ptr obfuscation")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=213417
Reported-by: <vannguye@xxxxxxxxx>
Acked-by: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 mm/slub.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/slub.c b/mm/slub.c
index 11a2df00729e..b6c5c8fd265d 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -15,6 +15,7 @@
 #include <linux/module.h>
 #include <linux/bit_spinlock.h>
 #include <linux/interrupt.h>
+#include <linux/swab.h>
 #include <linux/bitops.h>
 #include <linux/slab.h>
 #include "slab.h"
-- 
2.30.2